1103 lines
42 KiB
C
1103 lines
42 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2003-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* Interface to AVRCP mandatory commands
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*
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******************************************************************************/
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// #include <assert.h>
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#include "bt_trace.h"
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#include <string.h>
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#include "bt_target.h"
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#include "gki.h"
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#include "avrc_api.h"
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#include "avrc_int.h"
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#if (defined(AVRC_INCLUDED) && AVRC_INCLUDED == TRUE)
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/*****************************************************************************
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** Global data
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*****************************************************************************/
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#define AVRC_MAX_RCV_CTRL_EVT AVCT_BROWSE_UNCONG_IND_EVT
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#ifndef MAX
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#endif
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static const UINT8 avrc_ctrl_event_map[] = {
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AVRC_OPEN_IND_EVT, /* AVCT_CONNECT_CFM_EVT */
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AVRC_OPEN_IND_EVT, /* AVCT_CONNECT_IND_EVT */
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AVRC_CLOSE_IND_EVT, /* AVCT_DISCONNECT_CFM_EVT */
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AVRC_CLOSE_IND_EVT, /* AVCT_DISCONNECT_IND_EVT */
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AVRC_CONG_IND_EVT, /* AVCT_CONG_IND_EVT */
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AVRC_UNCONG_IND_EVT,/* AVCT_UNCONG_IND_EVT */
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AVRC_BROWSE_OPEN_IND_EVT, /* AVCT_BROWSE_CONN_CFM_EVT */
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AVRC_BROWSE_OPEN_IND_EVT, /* AVCT_BROWSE_CONN_IND_EVT */
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AVRC_BROWSE_CLOSE_IND_EVT, /* AVCT_BROWSE_DISCONN_CFM_EVT */
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AVRC_BROWSE_CLOSE_IND_EVT, /* AVCT_BROWSE_DISCONN_IND_EVT */
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AVRC_BROWSE_CONG_IND_EVT, /* AVCT_BROWSE_CONG_IND_EVT */
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AVRC_BROWSE_UNCONG_IND_EVT /* AVCT_BROWSE_UNCONG_IND_EVT */
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};
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#define AVRC_OP_DROP 0xFE /* use this unused opcode to indication no need to call the callback function */
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#define AVRC_OP_DROP_N_FREE 0xFD /* use this unused opcode to indication no need to call the callback function & free buffer */
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#define AVRC_OP_UNIT_INFO_RSP_LEN 8
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#define AVRC_OP_SUB_UNIT_INFO_RSP_LEN 8
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#define AVRC_OP_REJ_MSG_LEN 11
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/******************************************************************************
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**
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** Function avrc_ctrl_cback
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**
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** Description This is the callback function used by AVCTP to report
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** received link events.
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**
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** Returns Nothing.
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**
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******************************************************************************/
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static void avrc_ctrl_cback(UINT8 handle, UINT8 event, UINT16 result,
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BD_ADDR peer_addr)
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{
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UINT8 avrc_event;
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if (event <= AVRC_MAX_RCV_CTRL_EVT && avrc_cb.ccb[handle].p_ctrl_cback) {
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avrc_event = avrc_ctrl_event_map[event];
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if (event == AVCT_CONNECT_CFM_EVT) {
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if (result != 0) { /* failed */
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avrc_event = AVRC_CLOSE_IND_EVT;
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}
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}
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(*avrc_cb.ccb[handle].p_ctrl_cback)(handle, avrc_event, result, peer_addr);
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}
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/* else drop the unknown event*/
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}
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/******************************************************************************
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**
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** Function avrc_get_data_ptr
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**
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** Description Gets a pointer to the data payload in the packet.
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**
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** Returns A pointer to the data payload.
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**
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******************************************************************************/
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static UINT8 *avrc_get_data_ptr(BT_HDR *p_pkt)
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{
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return (UINT8 *)(p_pkt + 1) + p_pkt->offset;
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}
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/******************************************************************************
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**
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** Function avrc_copy_packet
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**
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** Description Copies an AVRC packet to a new buffer. In the new buffer,
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** the payload offset is at least AVCT_MSG_OFFSET octets.
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**
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** Returns The buffer with the copied data.
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**
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******************************************************************************/
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static BT_HDR *avrc_copy_packet(BT_HDR *p_pkt, int rsp_pkt_len)
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{
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const int offset = MAX(AVCT_MSG_OFFSET, p_pkt->offset);
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const int pkt_len = MAX(rsp_pkt_len, p_pkt->len);
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BT_HDR *p_pkt_copy =
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(BT_HDR *)GKI_getbuf((UINT16)(BT_HDR_SIZE + offset + pkt_len));
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/* Copy the packet header, set the new offset, and copy the payload */
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if (p_pkt_copy != NULL) {
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memcpy(p_pkt_copy, p_pkt, BT_HDR_SIZE);
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p_pkt_copy->offset = offset;
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UINT8 *p_data = avrc_get_data_ptr(p_pkt);
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UINT8 *p_data_copy = avrc_get_data_ptr(p_pkt_copy);
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memcpy(p_data_copy, p_data, p_pkt->len);
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}
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return p_pkt_copy;
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}
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#if (AVRC_METADATA_INCLUDED == TRUE)
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/******************************************************************************
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**
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** Function avrc_prep_end_frag
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**
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** Description This function prepares an end response fragment
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**
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** Returns Nothing.
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**
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******************************************************************************/
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static void avrc_prep_end_frag(UINT8 handle)
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{
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tAVRC_FRAG_CB *p_fcb;
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BT_HDR *p_pkt_new;
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UINT8 *p_data, *p_orig_data;
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UINT8 rsp_type;
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AVRC_TRACE_DEBUG ("avrc_prep_end_frag" );
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p_fcb = &avrc_cb.fcb[handle];
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/* The response type of the end fragment should be the same as the the PDU of "End Fragment
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** Response" Errata: https://www.bluetooth.org/errata/errata_view.cfm?errata_id=4383
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*/
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p_orig_data = ((UINT8 *)(p_fcb->p_fmsg + 1) + p_fcb->p_fmsg->offset);
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rsp_type = ((*p_orig_data) & AVRC_CTYPE_MASK);
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p_pkt_new = p_fcb->p_fmsg;
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p_pkt_new->len -= (AVRC_MAX_CTRL_DATA_LEN - AVRC_VENDOR_HDR_SIZE - AVRC_MIN_META_HDR_SIZE);
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p_pkt_new->offset += (AVRC_MAX_CTRL_DATA_LEN - AVRC_VENDOR_HDR_SIZE - AVRC_MIN_META_HDR_SIZE);
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p_data = (UINT8 *)(p_pkt_new + 1) + p_pkt_new->offset;
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*p_data++ = rsp_type;
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*p_data++ = (AVRC_SUB_PANEL << AVRC_SUBTYPE_SHIFT);
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*p_data++ = AVRC_OP_VENDOR;
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AVRC_CO_ID_TO_BE_STREAM(p_data, AVRC_CO_METADATA);
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*p_data++ = p_fcb->frag_pdu;
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*p_data++ = AVRC_PKT_END;
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/* 4=pdu, pkt_type & len */
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UINT16_TO_BE_STREAM(p_data, (p_pkt_new->len - AVRC_VENDOR_HDR_SIZE - AVRC_MIN_META_HDR_SIZE));
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}
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/******************************************************************************
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**
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** Function avrc_send_continue_frag
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**
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** Description This function sends a continue response fragment
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**
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** Returns Nothing.
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**
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******************************************************************************/
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static void avrc_send_continue_frag(UINT8 handle, UINT8 label)
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{
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tAVRC_FRAG_CB *p_fcb;
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BT_HDR *p_pkt_old, *p_pkt;
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UINT8 *p_old, *p_data;
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UINT8 cr = AVCT_RSP;
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tAVRC_RSP rej_rsp;
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p_fcb = &avrc_cb.fcb[handle];
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p_pkt = p_fcb->p_fmsg;
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AVRC_TRACE_DEBUG("%s handle = %u label = %u len = %d",
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__func__, handle, label, p_pkt->len);
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if (p_pkt->len > AVRC_MAX_CTRL_DATA_LEN) {
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int offset_len = MAX(AVCT_MSG_OFFSET, p_pkt->offset);
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p_pkt_old = p_fcb->p_fmsg;
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p_pkt = (BT_HDR *)GKI_getbuf((UINT16)(AVRC_PACKET_LEN + offset_len + BT_HDR_SIZE));
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if (p_pkt) {
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p_pkt->len = AVRC_MAX_CTRL_DATA_LEN;
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p_pkt->offset = AVCT_MSG_OFFSET;
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p_pkt->layer_specific = p_pkt_old->layer_specific;
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p_pkt->event = p_pkt_old->event;
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p_old = (UINT8 *)(p_pkt_old + 1) + p_pkt_old->offset;
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p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
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memcpy (p_data, p_old, AVRC_MAX_CTRL_DATA_LEN);
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/* use AVRC continue packet type */
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p_data += AVRC_VENDOR_HDR_SIZE;
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p_data++; /* pdu */
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*p_data++ = AVRC_PKT_CONTINUE;
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/* 4=pdu, pkt_type & len */
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UINT16_TO_BE_STREAM(p_data, (AVRC_MAX_CTRL_DATA_LEN - AVRC_VENDOR_HDR_SIZE - 4));
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/* prepare the left over for as an end fragment */
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avrc_prep_end_frag (handle);
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} else {
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/* use the current GKI buffer to send Internal error status */
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p_pkt = p_fcb->p_fmsg;
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p_fcb->p_fmsg = NULL;
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p_fcb->frag_enabled = FALSE;
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AVRC_TRACE_ERROR ("AVRC_MsgReq no buffers for fragmentation - send internal error" );
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p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
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*p_data++ = AVRC_PDU_REQUEST_CONTINUATION_RSP;
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*p_data++ = 0;
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UINT16_TO_BE_STREAM(p_data, 0);
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p_pkt->len = 4;
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rej_rsp.pdu = AVRC_PDU_REQUEST_CONTINUATION_RSP;
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rej_rsp.status = AVRC_STS_INTERNAL_ERR;
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AVRC_BldResponse( handle, (tAVRC_RESPONSE *)&rej_rsp, &p_pkt);
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cr = AVCT_RSP;
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}
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} else {
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/* end fragment. clean the control block */
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p_fcb->frag_enabled = FALSE;
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p_fcb->p_fmsg = NULL;
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}
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AVCT_MsgReq( handle, label, cr, p_pkt);
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}
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/******************************************************************************
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**
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** Function avrc_proc_vendor_command
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**
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** Description This function processes received vendor command.
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**
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** Returns if not NULL, the response to send right away.
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**
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******************************************************************************/
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static BT_HDR *avrc_proc_vendor_command(UINT8 handle, UINT8 label,
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BT_HDR *p_pkt, tAVRC_MSG_VENDOR *p_msg)
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{
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BT_HDR *p_rsp = NULL;
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UINT8 *p_data;
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UINT8 *p_begin;
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UINT8 pkt_type;
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BOOLEAN abort_frag = FALSE;
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tAVRC_STS status = AVRC_STS_NO_ERROR;
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tAVRC_FRAG_CB *p_fcb;
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p_begin = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
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p_data = p_begin + AVRC_VENDOR_HDR_SIZE;
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pkt_type = *(p_data + 1) & AVRC_PKT_TYPE_MASK;
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if (pkt_type != AVRC_PKT_SINGLE) {
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/* reject - commands can only be in single packets at AVRCP level */
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AVRC_TRACE_ERROR ("commands must be in single packet pdu:0x%x", *p_data );
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/* use the current GKI buffer to send the reject */
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status = AVRC_STS_BAD_CMD;
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}
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/* check if there are fragments waiting to be sent */
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else if (avrc_cb.fcb[handle].frag_enabled) {
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p_fcb = &avrc_cb.fcb[handle];
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if (p_msg->company_id == AVRC_CO_METADATA) {
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switch (*p_data) {
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case AVRC_PDU_ABORT_CONTINUATION_RSP:
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/* aborted by CT - send accept response */
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abort_frag = TRUE;
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p_begin = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
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*p_begin = (AVRC_RSP_ACCEPT & AVRC_CTYPE_MASK);
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if (*(p_data + 4) != p_fcb->frag_pdu) {
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*p_begin = (AVRC_RSP_REJ & AVRC_CTYPE_MASK);
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*(p_data + 4) = AVRC_STS_BAD_PARAM;
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} else {
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p_data = (p_begin + AVRC_VENDOR_HDR_SIZE + 2);
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UINT16_TO_BE_STREAM(p_data, 0);
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p_pkt->len = (p_data - p_begin);
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}
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AVCT_MsgReq( handle, label, AVCT_RSP, p_pkt);
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p_msg->hdr.opcode = AVRC_OP_DROP; /* used the p_pkt to send response */
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break;
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case AVRC_PDU_REQUEST_CONTINUATION_RSP:
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if (*(p_data + 4) == p_fcb->frag_pdu) {
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avrc_send_continue_frag(handle, label);
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p_msg->hdr.opcode = AVRC_OP_DROP_N_FREE;
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} else {
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/* the pdu id does not match - reject the command using the current GKI buffer */
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AVRC_TRACE_ERROR("avrc_proc_vendor_command continue pdu: 0x%x does not match \
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current re-assembly pdu: 0x%x",
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*(p_data + 4), p_fcb->frag_pdu);
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status = AVRC_STS_BAD_PARAM;
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abort_frag = TRUE;
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}
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break;
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default:
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/* implicit abort */
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abort_frag = TRUE;
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}
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} else {
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abort_frag = TRUE;
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/* implicit abort */
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}
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if (abort_frag) {
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if (p_fcb->p_fmsg) {
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GKI_freebuf(p_fcb->p_fmsg);
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}
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p_fcb->p_fmsg = NULL;
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p_fcb->frag_enabled = FALSE;
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}
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}
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if (status != AVRC_STS_NO_ERROR) {
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/* use the current GKI buffer to build/send the reject message */
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p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
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*p_data++ = AVRC_RSP_REJ;
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p_data += AVRC_VENDOR_HDR_SIZE; /* pdu */
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*p_data++ = 0; /* pkt_type */
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UINT16_TO_BE_STREAM(p_data, 1); /* len */
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*p_data++ = status; /* error code */
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p_pkt->len = AVRC_VENDOR_HDR_SIZE + 5;
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p_rsp = p_pkt;
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}
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return p_rsp;
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}
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/******************************************************************************
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**
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** Function avrc_proc_far_msg
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**
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** Description This function processes metadata fragmenation
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** and reassembly
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**
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** Returns 0, to report the message with msg_cback .
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**
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******************************************************************************/
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static UINT8 avrc_proc_far_msg(UINT8 handle, UINT8 label, UINT8 cr, BT_HDR **pp_pkt,
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tAVRC_MSG_VENDOR *p_msg)
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{
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BT_HDR *p_pkt = *pp_pkt;
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UINT8 *p_data;
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UINT8 drop_code = 0;
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BT_HDR *p_rsp = NULL;
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BT_HDR *p_cmd = NULL;
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BOOLEAN req_continue = FALSE;
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BT_HDR *p_pkt_new = NULL;
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UINT8 pkt_type;
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UINT16 buf_len;
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tAVRC_RASM_CB *p_rcb;
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tAVRC_NEXT_CMD avrc_cmd;
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p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
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/* Skip over vendor header (ctype, subunit*, opcode, CO_ID) */
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p_data += AVRC_VENDOR_HDR_SIZE;
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pkt_type = *(p_data + 1) & AVRC_PKT_TYPE_MASK;
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AVRC_TRACE_DEBUG ("pkt_type %d", pkt_type );
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p_rcb = &avrc_cb.rcb[handle];
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if (p_msg->company_id == AVRC_CO_METADATA) {
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/* check if the message needs to be re-assembled */
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if (pkt_type == AVRC_PKT_SINGLE || pkt_type == AVRC_PKT_START) {
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/* previous fragments need to be dropped, when received another new message */
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p_rcb->rasm_offset = 0;
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if (p_rcb->p_rmsg) {
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GKI_freebuf(p_rcb->p_rmsg);
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p_rcb->p_rmsg = NULL;
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}
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}
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if (pkt_type != AVRC_PKT_SINGLE && cr == AVCT_RSP) {
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/* not a single response packet - need to re-assemble metadata messages */
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if (pkt_type == AVRC_PKT_START) {
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/* Allocate buffer for re-assembly */
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p_rcb->rasm_pdu = *p_data;
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if ((p_rcb->p_rmsg = (BT_HDR *)GKI_getbuf(GKI_MAX_BUF_SIZE)) != NULL) {
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/* Copy START packet to buffer for re-assembling fragments*/
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memcpy(p_rcb->p_rmsg, p_pkt, sizeof(BT_HDR)); /* Copy bt hdr */
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/* Copy metadata message */
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memcpy((UINT8 *)(p_rcb->p_rmsg + 1),
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(UINT8 *)(p_pkt + 1) + p_pkt->offset, p_pkt->len);
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/* offset of start of metadata response in reassembly buffer */
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p_rcb->p_rmsg->offset = p_rcb->rasm_offset = 0;
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/* Free original START packet, replace with pointer to reassembly buffer */
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GKI_freebuf(p_pkt);
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*pp_pkt = p_rcb->p_rmsg;
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} else {
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/* Unable to allocate buffer for fragmented avrc message. Reuse START
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buffer for reassembly (re-assembled message may fit into ACL buf) */
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AVRC_TRACE_DEBUG ("Unable to allocate buffer for fragmented avrc message, \
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reusing START buffer for reassembly");
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p_rcb->rasm_offset = p_pkt->offset;
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p_rcb->p_rmsg = p_pkt;
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}
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/* set offset to point to where to copy next - use the same re-asm logic as AVCT */
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p_rcb->p_rmsg->offset += p_rcb->p_rmsg->len;
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req_continue = TRUE;
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} else if (p_rcb->p_rmsg == NULL) {
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/* Received a CONTINUE/END, but no corresponding START
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(or previous fragmented response was dropped) */
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AVRC_TRACE_DEBUG ("Received a CONTINUE/END without no corresponding START \
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(or previous fragmented response was dropped)");
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drop_code = 5;
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GKI_freebuf(p_pkt);
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*pp_pkt = NULL;
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} else {
|
|
/* get size of buffer holding assembled message */
|
|
buf_len = GKI_get_buf_size (p_rcb->p_rmsg) - sizeof(BT_HDR);
|
|
/* adjust offset and len of fragment for header byte */
|
|
p_pkt->offset += (AVRC_VENDOR_HDR_SIZE + AVRC_MIN_META_HDR_SIZE);
|
|
p_pkt->len -= (AVRC_VENDOR_HDR_SIZE + AVRC_MIN_META_HDR_SIZE);
|
|
/* verify length */
|
|
if ((p_rcb->p_rmsg->offset + p_pkt->len) > buf_len) {
|
|
AVRC_TRACE_WARNING("Fragmented message too big! - report the partial message");
|
|
p_pkt->len = buf_len - p_rcb->p_rmsg->offset;
|
|
pkt_type = AVRC_PKT_END;
|
|
}
|
|
|
|
/* copy contents of p_pkt to p_rx_msg */
|
|
memcpy((UINT8 *)(p_rcb->p_rmsg + 1) + p_rcb->p_rmsg->offset,
|
|
(UINT8 *)(p_pkt + 1) + p_pkt->offset, p_pkt->len);
|
|
|
|
if (pkt_type == AVRC_PKT_END) {
|
|
p_rcb->p_rmsg->offset = p_rcb->rasm_offset;
|
|
p_rcb->p_rmsg->len += p_pkt->len;
|
|
p_pkt_new = p_rcb->p_rmsg;
|
|
p_rcb->rasm_offset = 0;
|
|
p_rcb->p_rmsg = NULL;
|
|
p_msg->p_vendor_data = (UINT8 *)(p_pkt_new + 1) + p_pkt_new->offset;
|
|
p_msg->hdr.ctype = p_msg->p_vendor_data[0] & AVRC_CTYPE_MASK;
|
|
/* 6 = ctype, subunit*, opcode & CO_ID */
|
|
p_msg->p_vendor_data += AVRC_VENDOR_HDR_SIZE;
|
|
p_msg->vendor_len = p_pkt_new->len - AVRC_VENDOR_HDR_SIZE;
|
|
p_data = p_msg->p_vendor_data + 1; /* skip pdu */
|
|
*p_data++ = AVRC_PKT_SINGLE;
|
|
UINT16_TO_BE_STREAM(p_data, (p_msg->vendor_len - AVRC_MIN_META_HDR_SIZE));
|
|
AVRC_TRACE_DEBUG("end frag:%d, total len:%d, offset:%d", p_pkt->len,
|
|
p_pkt_new->len, p_pkt_new->offset);
|
|
} else {
|
|
p_rcb->p_rmsg->offset += p_pkt->len;
|
|
p_rcb->p_rmsg->len += p_pkt->len;
|
|
p_pkt_new = NULL;
|
|
req_continue = TRUE;
|
|
}
|
|
GKI_freebuf(p_pkt);
|
|
*pp_pkt = p_pkt_new;
|
|
}
|
|
}
|
|
|
|
if (cr == AVCT_CMD) {
|
|
p_rsp = avrc_proc_vendor_command(handle, label, *pp_pkt, p_msg);
|
|
if (p_rsp) {
|
|
AVCT_MsgReq( handle, label, AVCT_RSP, p_rsp);
|
|
drop_code = 3;
|
|
} else if (p_msg->hdr.opcode == AVRC_OP_DROP) {
|
|
drop_code = 1;
|
|
} else if (p_msg->hdr.opcode == AVRC_OP_DROP_N_FREE) {
|
|
drop_code = 4;
|
|
}
|
|
|
|
} else if (cr == AVCT_RSP && req_continue == TRUE) {
|
|
avrc_cmd.pdu = AVRC_PDU_REQUEST_CONTINUATION_RSP;
|
|
avrc_cmd.status = AVRC_STS_NO_ERROR;
|
|
avrc_cmd.target_pdu = p_rcb->rasm_pdu;
|
|
if (AVRC_BldCommand ((tAVRC_COMMAND *)&avrc_cmd, &p_cmd) == AVRC_STS_NO_ERROR) {
|
|
drop_code = 2;
|
|
AVRC_MsgReq (handle, (UINT8)(label), AVRC_CMD_CTRL, p_cmd);
|
|
}
|
|
}
|
|
}
|
|
|
|
return drop_code;
|
|
}
|
|
#endif /* (AVRC_METADATA_INCLUDED == TRUE) */
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function avrc_msg_cback
|
|
**
|
|
** Description This is the callback function used by AVCTP to report
|
|
** received AV control messages.
|
|
**
|
|
** Returns Nothing.
|
|
**
|
|
******************************************************************************/
|
|
static void avrc_msg_cback(UINT8 handle, UINT8 label, UINT8 cr,
|
|
BT_HDR *p_pkt)
|
|
{
|
|
UINT8 opcode;
|
|
tAVRC_MSG msg;
|
|
UINT8 *p_data;
|
|
UINT8 *p_begin;
|
|
BOOLEAN drop = FALSE;
|
|
BOOLEAN do_free = TRUE;
|
|
BT_HDR *p_rsp = NULL;
|
|
UINT8 *p_rsp_data;
|
|
int xx;
|
|
BOOLEAN reject = FALSE;
|
|
#if (BT_USE_TRACES == TRUE)
|
|
char *p_drop_msg = "dropped";
|
|
#endif
|
|
tAVRC_MSG_VENDOR *p_msg = &msg.vendor;
|
|
|
|
if (cr == AVCT_CMD &&
|
|
(p_pkt->layer_specific & AVCT_DATA_CTRL && AVRC_PACKET_LEN < sizeof(p_pkt->len))) {
|
|
/* Ignore the invalid AV/C command frame */
|
|
#if (BT_USE_TRACES == TRUE)
|
|
p_drop_msg = "dropped - too long AV/C cmd frame size";
|
|
#endif
|
|
GKI_freebuf(p_pkt);
|
|
return;
|
|
}
|
|
|
|
if (cr == AVCT_REJ) {
|
|
/* The peer thinks that this PID is no longer open - remove this handle */
|
|
/* */
|
|
GKI_freebuf(p_pkt);
|
|
AVCT_RemoveConn(handle);
|
|
return;
|
|
}
|
|
|
|
p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
|
|
memset(&msg, 0, sizeof(tAVRC_MSG) );
|
|
{
|
|
msg.hdr.ctype = p_data[0] & AVRC_CTYPE_MASK;
|
|
AVRC_TRACE_DEBUG("avrc_msg_cback handle:%d, ctype:%d, offset:%d, len: %d",
|
|
handle, msg.hdr.ctype, p_pkt->offset, p_pkt->len);
|
|
msg.hdr.subunit_type = (p_data[1] & AVRC_SUBTYPE_MASK) >> AVRC_SUBTYPE_SHIFT;
|
|
msg.hdr.subunit_id = p_data[1] & AVRC_SUBID_MASK;
|
|
opcode = p_data[2];
|
|
}
|
|
|
|
if ( ((avrc_cb.ccb[handle].control & AVRC_CT_TARGET) && (cr == AVCT_CMD)) ||
|
|
((avrc_cb.ccb[handle].control & AVRC_CT_CONTROL) && (cr == AVCT_RSP)) ) {
|
|
|
|
switch (opcode) {
|
|
case AVRC_OP_UNIT_INFO:
|
|
if (cr == AVCT_CMD) {
|
|
/* send the response to the peer */
|
|
p_rsp = avrc_copy_packet(p_pkt, AVRC_OP_UNIT_INFO_RSP_LEN);
|
|
p_rsp_data = avrc_get_data_ptr(p_rsp);
|
|
*p_rsp_data = AVRC_RSP_IMPL_STBL;
|
|
/* check & set the offset. set response code, set subunit_type & subunit_id,
|
|
set AVRC_OP_UNIT_INFO */
|
|
/* 3 bytes: ctype, subunit*, opcode */
|
|
p_rsp_data += AVRC_AVC_HDR_SIZE;
|
|
*p_rsp_data++ = 7;
|
|
/* Panel subunit & id=0 */
|
|
*p_rsp_data++ = (AVRC_SUB_PANEL << AVRC_SUBTYPE_SHIFT);
|
|
AVRC_CO_ID_TO_BE_STREAM(p_rsp_data, avrc_cb.ccb[handle].company_id);
|
|
p_rsp->len = (UINT16) (p_rsp_data - (UINT8 *)(p_rsp + 1) - p_rsp->offset);
|
|
cr = AVCT_RSP;
|
|
#if (BT_USE_TRACES == TRUE)
|
|
p_drop_msg = "auto respond";
|
|
#endif
|
|
} else {
|
|
/* parse response */
|
|
p_data += 4; /* 3 bytes: ctype, subunit*, opcode + octet 3 (is 7)*/
|
|
msg.unit.unit_type = (*p_data & AVRC_SUBTYPE_MASK) >> AVRC_SUBTYPE_SHIFT;
|
|
msg.unit.unit = *p_data & AVRC_SUBID_MASK;
|
|
p_data++;
|
|
AVRC_BE_STREAM_TO_CO_ID(msg.unit.company_id, p_data);
|
|
}
|
|
break;
|
|
|
|
case AVRC_OP_SUB_INFO:
|
|
if (cr == AVCT_CMD) {
|
|
/* send the response to the peer */
|
|
p_rsp = avrc_copy_packet(p_pkt, AVRC_OP_SUB_UNIT_INFO_RSP_LEN);
|
|
p_rsp_data = avrc_get_data_ptr(p_rsp);
|
|
*p_rsp_data = AVRC_RSP_IMPL_STBL;
|
|
/* check & set the offset. set response code, set (subunit_type & subunit_id),
|
|
set AVRC_OP_SUB_INFO, set (page & extention code) */
|
|
p_rsp_data += 4;
|
|
/* Panel subunit & id=0 */
|
|
*p_rsp_data++ = (AVRC_SUB_PANEL << AVRC_SUBTYPE_SHIFT);
|
|
memset(p_rsp_data, AVRC_CMD_OPRND_PAD, AVRC_SUBRSP_OPRND_BYTES);
|
|
p_rsp_data += AVRC_SUBRSP_OPRND_BYTES;
|
|
p_rsp->len = (UINT16) (p_rsp_data - (UINT8 *)(p_rsp + 1) - p_rsp->offset);
|
|
cr = AVCT_RSP;
|
|
#if (BT_USE_TRACES == TRUE)
|
|
p_drop_msg = "auto responded";
|
|
#endif
|
|
} else {
|
|
/* parse response */
|
|
p_data += AVRC_AVC_HDR_SIZE; /* 3 bytes: ctype, subunit*, opcode */
|
|
msg.sub.page = (*p_data++ >> AVRC_SUB_PAGE_SHIFT) & AVRC_SUB_PAGE_MASK;
|
|
xx = 0;
|
|
while (*p_data != AVRC_CMD_OPRND_PAD && xx < AVRC_SUB_TYPE_LEN) {
|
|
msg.sub.subunit_type[xx] = *p_data++ >> AVRC_SUBTYPE_SHIFT;
|
|
if (msg.sub.subunit_type[xx] == AVRC_SUB_PANEL) {
|
|
msg.sub.panel = TRUE;
|
|
}
|
|
xx++;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case AVRC_OP_VENDOR:
|
|
p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
|
|
p_begin = p_data;
|
|
if (p_pkt->len < AVRC_VENDOR_HDR_SIZE) { /* 6 = ctype, subunit*, opcode & CO_ID */
|
|
if (cr == AVCT_CMD) {
|
|
reject = TRUE;
|
|
} else {
|
|
drop = TRUE;
|
|
}
|
|
break;
|
|
}
|
|
p_data += AVRC_AVC_HDR_SIZE; /* skip the first 3 bytes: ctype, subunit*, opcode */
|
|
AVRC_BE_STREAM_TO_CO_ID(p_msg->company_id, p_data);
|
|
p_msg->p_vendor_data = p_data;
|
|
p_msg->vendor_len = p_pkt->len - (p_data - p_begin);
|
|
|
|
#if (AVRC_METADATA_INCLUDED == TRUE)
|
|
UINT8 drop_code = 0;
|
|
if (p_msg->company_id == AVRC_CO_METADATA) {
|
|
/* Validate length for metadata message */
|
|
if (p_pkt->len < (AVRC_VENDOR_HDR_SIZE + AVRC_MIN_META_HDR_SIZE)) {
|
|
if (cr == AVCT_CMD) {
|
|
reject = TRUE;
|
|
} else {
|
|
drop = TRUE;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* Check+handle fragmented messages */
|
|
drop_code = avrc_proc_far_msg(handle, label, cr, &p_pkt, p_msg);
|
|
if (drop_code > 0) {
|
|
drop = TRUE;
|
|
}
|
|
}
|
|
if (drop_code > 0) {
|
|
if (drop_code != 4) {
|
|
do_free = FALSE;
|
|
}
|
|
#if (BT_USE_TRACES == TRUE)
|
|
switch (drop_code) {
|
|
case 1:
|
|
p_drop_msg = "sent_frag";
|
|
break;
|
|
case 2:
|
|
p_drop_msg = "req_cont";
|
|
break;
|
|
case 3:
|
|
p_drop_msg = "sent_frag3";
|
|
break;
|
|
case 4:
|
|
p_drop_msg = "sent_frag_free";
|
|
break;
|
|
default:
|
|
p_drop_msg = "sent_fragd";
|
|
}
|
|
#endif
|
|
}
|
|
#endif /* (AVRC_METADATA_INCLUDED == TRUE) */
|
|
break;
|
|
|
|
case AVRC_OP_PASS_THRU:
|
|
if (p_pkt->len < 5) { /* 3 bytes: ctype, subunit*, opcode & op_id & len */
|
|
if (cr == AVCT_CMD) {
|
|
reject = TRUE;
|
|
} else {
|
|
drop = TRUE;
|
|
}
|
|
break;
|
|
}
|
|
p_data += AVRC_AVC_HDR_SIZE; /* skip the first 3 bytes: ctype, subunit*, opcode */
|
|
msg.pass.op_id = (AVRC_PASS_OP_ID_MASK & *p_data);
|
|
if (AVRC_PASS_STATE_MASK & *p_data) {
|
|
msg.pass.state = TRUE;
|
|
} else {
|
|
msg.pass.state = FALSE;
|
|
}
|
|
p_data++;
|
|
msg.pass.pass_len = *p_data++;
|
|
if (msg.pass.pass_len != p_pkt->len - 5) {
|
|
msg.pass.pass_len = p_pkt->len - 5;
|
|
}
|
|
if (msg.pass.pass_len) {
|
|
msg.pass.p_pass_data = p_data;
|
|
} else {
|
|
msg.pass.p_pass_data = NULL;
|
|
}
|
|
break;
|
|
|
|
|
|
default:
|
|
if ((avrc_cb.ccb[handle].control & AVRC_CT_TARGET) && (cr == AVCT_CMD)) {
|
|
/* reject unsupported opcode */
|
|
reject = TRUE;
|
|
}
|
|
drop = TRUE;
|
|
break;
|
|
}
|
|
} else { /* drop the event */
|
|
drop = TRUE;
|
|
}
|
|
|
|
if (reject) {
|
|
/* reject unsupported opcode */
|
|
p_rsp = avrc_copy_packet(p_pkt, AVRC_OP_REJ_MSG_LEN);
|
|
p_rsp_data = avrc_get_data_ptr(p_rsp);
|
|
*p_rsp_data = AVRC_RSP_REJ;
|
|
#if (BT_USE_TRACES == TRUE)
|
|
p_drop_msg = "rejected";
|
|
#endif
|
|
cr = AVCT_RSP;
|
|
drop = TRUE;
|
|
}
|
|
|
|
if (p_rsp) {
|
|
/* set to send response right away */
|
|
AVCT_MsgReq( handle, label, cr, p_rsp);
|
|
drop = TRUE;
|
|
}
|
|
|
|
if (drop == FALSE) {
|
|
msg.hdr.opcode = opcode;
|
|
(*avrc_cb.ccb[handle].p_msg_cback)(handle, label, opcode, &msg);
|
|
}
|
|
#if (BT_USE_TRACES == TRUE)
|
|
else {
|
|
AVRC_TRACE_WARNING("avrc_msg_cback %s msg handle:%d, control:%d, cr:%d, opcode:x%x",
|
|
p_drop_msg,
|
|
handle, avrc_cb.ccb[handle].control, cr, opcode);
|
|
}
|
|
#endif
|
|
|
|
|
|
if (do_free) {
|
|
GKI_freebuf(p_pkt);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function avrc_pass_msg
|
|
**
|
|
** Description Compose a PASS THROUGH command according to p_msg
|
|
**
|
|
** Input Parameters:
|
|
** p_msg: Pointer to PASS THROUGH message structure.
|
|
**
|
|
** Output Parameters:
|
|
** None.
|
|
**
|
|
** Returns pointer to a valid GKI buffer if successful.
|
|
** NULL if p_msg is NULL.
|
|
**
|
|
******************************************************************************/
|
|
static BT_HDR *avrc_pass_msg(tAVRC_MSG_PASS *p_msg)
|
|
{
|
|
BT_HDR *p_cmd = NULL;
|
|
UINT8 *p_data;
|
|
|
|
assert(p_msg != NULL);
|
|
assert(AVRC_CMD_POOL_SIZE > (AVRC_MIN_CMD_LEN + p_msg->pass_len));
|
|
|
|
if ((p_cmd = (BT_HDR *) GKI_getpoolbuf(AVRC_CMD_POOL_ID)) != NULL) {
|
|
p_cmd->offset = AVCT_MSG_OFFSET;
|
|
p_cmd->layer_specific = AVCT_DATA_CTRL;
|
|
p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
|
|
*p_data++ = (p_msg->hdr.ctype & AVRC_CTYPE_MASK);
|
|
*p_data++ = (AVRC_SUB_PANEL << AVRC_SUBTYPE_SHIFT); /* Panel subunit & id=0 */
|
|
*p_data++ = AVRC_OP_PASS_THRU;
|
|
*p_data = (AVRC_PASS_OP_ID_MASK & p_msg->op_id);
|
|
if (p_msg->state) {
|
|
*p_data |= AVRC_PASS_STATE_MASK;
|
|
}
|
|
p_data++;
|
|
|
|
if (p_msg->op_id == AVRC_ID_VENDOR) {
|
|
*p_data++ = p_msg->pass_len;
|
|
if (p_msg->pass_len && p_msg->p_pass_data) {
|
|
memcpy(p_data, p_msg->p_pass_data, p_msg->pass_len);
|
|
p_data += p_msg->pass_len;
|
|
}
|
|
} else { /* set msg len to 0 for other op_id */
|
|
/* set msg len to 0 for other op_id */
|
|
*p_data++ = 0;
|
|
}
|
|
p_cmd->len = (UINT16) (p_data - (UINT8 *)(p_cmd + 1) - p_cmd->offset);
|
|
}
|
|
return p_cmd;
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function AVRC_Open
|
|
**
|
|
** Description This function is called to open a connection to AVCTP.
|
|
** The connection can be either an initiator or acceptor, as
|
|
** determined by the p_ccb->stream parameter.
|
|
** The connection can be a target, a controller or for both role,
|
|
** as determined by the p_ccb->control parameter.
|
|
** By definition, a target connection is an acceptor connection
|
|
** that waits for an incoming AVCTP connection from the peer.
|
|
** The connection remains available to the application until
|
|
** the application closes it by calling AVRC_Close(). The
|
|
** application does not need to reopen the connection after an
|
|
** AVRC_CLOSE_IND_EVT is received.
|
|
**
|
|
** Input Parameters:
|
|
** p_ccb->company_id: Company Identifier.
|
|
**
|
|
** p_ccb->p_ctrl_cback: Pointer to control callback function.
|
|
**
|
|
** p_ccb->p_msg_cback: Pointer to message callback function.
|
|
**
|
|
** p_ccb->conn: AVCTP connection role. This is set to
|
|
** AVCTP_INT for initiator connections and AVCTP_ACP
|
|
** for acceptor connections.
|
|
**
|
|
** p_ccb->control: Control role. This is set to
|
|
** AVRC_CT_TARGET for target connections, AVRC_CT_CONTROL
|
|
** for control connections or (AVRC_CT_TARGET|AVRC_CT_CONTROL)
|
|
** for connections that support both roles.
|
|
**
|
|
** peer_addr: BD address of peer device. This value is
|
|
** only used for initiator connections; for acceptor
|
|
** connections it can be set to NULL.
|
|
**
|
|
** Output Parameters:
|
|
** p_handle: Pointer to handle. This parameter is only
|
|
** valid if AVRC_SUCCESS is returned.
|
|
**
|
|
** Returns AVRC_SUCCESS if successful.
|
|
** AVRC_NO_RESOURCES if there are not enough resources to open
|
|
** the connection.
|
|
**
|
|
******************************************************************************/
|
|
UINT16 AVRC_Open(UINT8 *p_handle, tAVRC_CONN_CB *p_ccb, BD_ADDR_PTR peer_addr)
|
|
{
|
|
UINT16 status;
|
|
tAVCT_CC cc;
|
|
|
|
cc.p_ctrl_cback = avrc_ctrl_cback; /* Control callback */
|
|
cc.p_msg_cback = avrc_msg_cback; /* Message callback */
|
|
cc.pid = UUID_SERVCLASS_AV_REMOTE_CONTROL; /* Profile ID */
|
|
cc.role = p_ccb->conn; /* Initiator/acceptor role */
|
|
cc.control = p_ccb->control; /* Control role (Control/Target) */
|
|
|
|
status = AVCT_CreateConn(p_handle, &cc, peer_addr);
|
|
if (status == AVCT_SUCCESS) {
|
|
memcpy(&avrc_cb.ccb[*p_handle], p_ccb, sizeof(tAVRC_CONN_CB));
|
|
#if (AVRC_METADATA_INCLUDED == TRUE)
|
|
memset(&avrc_cb.fcb[*p_handle], 0, sizeof(tAVRC_FRAG_CB));
|
|
memset(&avrc_cb.rcb[*p_handle], 0, sizeof(tAVRC_RASM_CB));
|
|
#endif
|
|
}
|
|
AVRC_TRACE_DEBUG("AVRC_Open role: %d, control:%d status:%d, handle:%d", cc.role, cc.control,
|
|
status, *p_handle);
|
|
|
|
return status;
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function AVRC_Close
|
|
**
|
|
** Description Close a connection opened with AVRC_Open().
|
|
** This function is called when the
|
|
** application is no longer using a connection.
|
|
**
|
|
** Input Parameters:
|
|
** handle: Handle of this connection.
|
|
**
|
|
** Output Parameters:
|
|
** None.
|
|
**
|
|
** Returns AVRC_SUCCESS if successful.
|
|
** AVRC_BAD_HANDLE if handle is invalid.
|
|
**
|
|
******************************************************************************/
|
|
UINT16 AVRC_Close(UINT8 handle)
|
|
{
|
|
AVRC_TRACE_DEBUG("AVRC_Close handle:%d", handle);
|
|
return AVCT_RemoveConn(handle);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function AVRC_MsgReq
|
|
**
|
|
** Description This function is used to send the AVRCP byte stream in p_pkt
|
|
** down to AVCTP.
|
|
**
|
|
** It is expected that p_pkt->offset is at least AVCT_MSG_OFFSET
|
|
** p_pkt->layer_specific is AVCT_DATA_CTRL or AVCT_DATA_BROWSE
|
|
** p_pkt->event is AVRC_OP_VENDOR, AVRC_OP_PASS_THRU or AVRC_OP_BROWSE
|
|
** The above BT_HDR settings are set by the AVRC_Bld* functions.
|
|
**
|
|
** Returns AVRC_SUCCESS if successful.
|
|
** AVRC_BAD_HANDLE if handle is invalid.
|
|
**
|
|
******************************************************************************/
|
|
UINT16 AVRC_MsgReq (UINT8 handle, UINT8 label, UINT8 ctype, BT_HDR *p_pkt)
|
|
{
|
|
#if (AVRC_METADATA_INCLUDED == TRUE)
|
|
UINT8 *p_data;
|
|
UINT8 cr = AVCT_CMD;
|
|
BOOLEAN chk_frag = TRUE;
|
|
UINT8 *p_start = NULL;
|
|
tAVRC_FRAG_CB *p_fcb;
|
|
UINT16 len;
|
|
BT_HDR *p_pkt_new;
|
|
|
|
if (!p_pkt) {
|
|
return AVRC_BAD_PARAM;
|
|
}
|
|
|
|
AVRC_TRACE_DEBUG("%s handle = %u label = %u ctype = %u len = %d",
|
|
__func__, handle, label, ctype, p_pkt->len);
|
|
|
|
if (ctype >= AVRC_RSP_NOT_IMPL) {
|
|
cr = AVCT_RSP;
|
|
}
|
|
|
|
if (p_pkt->event == AVRC_OP_VENDOR) {
|
|
/* add AVRCP Vendor Dependent headers */
|
|
p_start = ((UINT8 *)(p_pkt + 1) + p_pkt->offset);
|
|
p_pkt->offset -= AVRC_VENDOR_HDR_SIZE;
|
|
p_pkt->len += AVRC_VENDOR_HDR_SIZE;
|
|
p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
|
|
*p_data++ = (ctype & AVRC_CTYPE_MASK);
|
|
*p_data++ = (AVRC_SUB_PANEL << AVRC_SUBTYPE_SHIFT);
|
|
*p_data++ = AVRC_OP_VENDOR;
|
|
AVRC_CO_ID_TO_BE_STREAM(p_data, AVRC_CO_METADATA);
|
|
} else if (p_pkt->event == AVRC_OP_PASS_THRU) {
|
|
/* add AVRCP Pass Through headers */
|
|
p_start = ((UINT8 *)(p_pkt + 1) + p_pkt->offset);
|
|
p_pkt->offset -= AVRC_PASS_THRU_SIZE;
|
|
p_pkt->len += AVRC_PASS_THRU_SIZE;
|
|
p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
|
|
*p_data++ = (ctype & AVRC_CTYPE_MASK);
|
|
*p_data++ = (AVRC_SUB_PANEL << AVRC_SUBTYPE_SHIFT);
|
|
*p_data++ = AVRC_OP_PASS_THRU;/* opcode */
|
|
*p_data++ = AVRC_ID_VENDOR; /* operation id */
|
|
*p_data++ = 5; /* operation data len */
|
|
AVRC_CO_ID_TO_BE_STREAM(p_data, AVRC_CO_METADATA);
|
|
}
|
|
|
|
/* abandon previous fragments */
|
|
p_fcb = &avrc_cb.fcb[handle];
|
|
if (p_fcb->frag_enabled) {
|
|
p_fcb->frag_enabled = FALSE;
|
|
}
|
|
|
|
if (p_fcb->p_fmsg) {
|
|
GKI_freebuf(p_fcb->p_fmsg);
|
|
p_fcb->p_fmsg = NULL;
|
|
}
|
|
|
|
/* AVRCP spec has not defined any control channel commands that needs fragmentation at this level
|
|
* check for fragmentation only on the response */
|
|
if ((cr == AVCT_RSP) && (chk_frag == TRUE)) {
|
|
if (p_pkt->len > AVRC_MAX_CTRL_DATA_LEN) {
|
|
int offset_len = MAX(AVCT_MSG_OFFSET, p_pkt->offset);
|
|
p_pkt_new = (BT_HDR *)GKI_getbuf((UINT16)(AVRC_PACKET_LEN + offset_len
|
|
+ BT_HDR_SIZE));
|
|
if (p_pkt_new && (p_start != NULL)) {
|
|
p_fcb->frag_enabled = TRUE;
|
|
p_fcb->p_fmsg = p_pkt;
|
|
p_fcb->frag_pdu = *p_start;
|
|
p_pkt = p_pkt_new;
|
|
p_pkt_new = p_fcb->p_fmsg;
|
|
p_pkt->len = AVRC_MAX_CTRL_DATA_LEN;
|
|
p_pkt->offset = p_pkt_new->offset;
|
|
p_pkt->layer_specific = p_pkt_new->layer_specific;
|
|
p_pkt->event = p_pkt_new->event;
|
|
p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
|
|
p_start -= AVRC_VENDOR_HDR_SIZE;
|
|
memcpy (p_data, p_start, AVRC_MAX_CTRL_DATA_LEN);
|
|
/* use AVRC start packet type */
|
|
p_data += AVRC_VENDOR_HDR_SIZE;
|
|
p_data++; /* pdu */
|
|
*p_data++ = AVRC_PKT_START;
|
|
/* 4 pdu, pkt_type & len */
|
|
len = (AVRC_MAX_CTRL_DATA_LEN - AVRC_VENDOR_HDR_SIZE - AVRC_MIN_META_HDR_SIZE);
|
|
UINT16_TO_BE_STREAM(p_data, len);
|
|
|
|
/* prepare the left over for as an end fragment */
|
|
avrc_prep_end_frag (handle);
|
|
AVRC_TRACE_DEBUG ("%s p_pkt len:%d/%d, next len:%d", __func__,
|
|
p_pkt->len, len, p_fcb->p_fmsg->len );
|
|
} else {
|
|
AVRC_TRACE_ERROR ("AVRC_MsgReq no buffers for fragmentation" );
|
|
GKI_freebuf(p_pkt);
|
|
return AVRC_NO_RESOURCES;
|
|
}
|
|
}
|
|
}
|
|
|
|
return AVCT_MsgReq( handle, label, cr, p_pkt);
|
|
#else
|
|
return AVRC_NO_RESOURCES;
|
|
#endif
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function AVRC_PassCmd
|
|
**
|
|
** Description Send a PASS THROUGH command to the peer device. This
|
|
** function can only be called for controller role connections.
|
|
** Any response message from the peer is passed back through
|
|
** the tAVRC_MSG_CBACK callback function.
|
|
**
|
|
** Input Parameters:
|
|
** handle: Handle of this connection.
|
|
**
|
|
** label: Transaction label.
|
|
**
|
|
** p_msg: Pointer to PASS THROUGH message structure.
|
|
**
|
|
** Output Parameters:
|
|
** None.
|
|
**
|
|
** Returns AVRC_SUCCESS if successful.
|
|
** AVRC_BAD_HANDLE if handle is invalid.
|
|
**
|
|
******************************************************************************/
|
|
UINT16 AVRC_PassCmd(UINT8 handle, UINT8 label, tAVRC_MSG_PASS *p_msg)
|
|
{
|
|
BT_HDR *p_buf;
|
|
assert(p_msg != NULL);
|
|
if (p_msg) {
|
|
p_msg->hdr.ctype = AVRC_CMD_CTRL;
|
|
p_buf = avrc_pass_msg(p_msg);
|
|
if (p_buf) {
|
|
return AVCT_MsgReq( handle, label, AVCT_CMD, p_buf);
|
|
}
|
|
}
|
|
return AVRC_NO_RESOURCES;
|
|
}
|
|
|
|
/******************************************************************************
|
|
**
|
|
** Function AVRC_PassRsp
|
|
**
|
|
** Description Send a PASS THROUGH response to the peer device. This
|
|
** function can only be called for target role connections.
|
|
** This function must be called when a PASS THROUGH command
|
|
** message is received from the peer through the
|
|
** tAVRC_MSG_CBACK callback function.
|
|
**
|
|
** Input Parameters:
|
|
** handle: Handle of this connection.
|
|
**
|
|
** label: Transaction label. Must be the same value as
|
|
** passed with the command message in the callback function.
|
|
**
|
|
** p_msg: Pointer to PASS THROUGH message structure.
|
|
**
|
|
** Output Parameters:
|
|
** None.
|
|
**
|
|
** Returns AVRC_SUCCESS if successful.
|
|
** AVRC_BAD_HANDLE if handle is invalid.
|
|
**
|
|
******************************************************************************/
|
|
UINT16 AVRC_PassRsp(UINT8 handle, UINT8 label, tAVRC_MSG_PASS *p_msg)
|
|
{
|
|
BT_HDR *p_buf;
|
|
assert(p_msg != NULL);
|
|
if (p_msg) {
|
|
p_buf = avrc_pass_msg(p_msg);
|
|
if (p_buf) {
|
|
return AVCT_MsgReq( handle, label, AVCT_RSP, p_buf);
|
|
}
|
|
}
|
|
return AVRC_NO_RESOURCES;
|
|
}
|
|
|
|
#endif /* #if (defined(AVRC_INCLUDED) && AVRC_INCLUDED == TRUE) */
|